Warp twisting-in machine



J. H. BECKER WARP TWISTING-IN MACHINE May 25, 1937.

Filed July 25, 1936 6 Sheets-Sheet l llll'llLl'l-l l l l l I I I IN VENTOK J 1? Bcke) w M X ATTORNEY.

y ,1 31. v J. H. BECKER 4 2,081,262

WARP TWISTiNG-IN MACHINE Filed July 25, 1936 6 Sheets-Shgefi 2 INVENTOR, JBh/n HBeo/rw;

ATTORNEY.

y 1937. BECKER 2,081,262

WARP TWISTING- IN MACHINE Filed July 23, 1936 6 Sheets-Sheet 3 INVENTOR, Jo 72/21, 11 Bw er,

ATTORNEY.

May 25, 1937. H; E 2,081,262

WARP TWISTING-IN MACHINE v Filed July 25, 1936 6 Sheets-Sheet 4 ar INVENTOR,

John H Becker.

BY v 1 whqfmk v I ATTORNEY.

'- May 25, 1937. J. H. BECKER 2,081,262

WARP TWI STING IN MACHINE Filed July 25, 1956 6 Sheets-Sheet 5 I INVENTOR, \Tohn/filfleckevg ATTORNEY. V

' May 25, 1937. J, H, BECKER 2,081,262

WARP TWISTING- IN MACHINE Filed July 25, 1936 e sheets-"sheet 6 IN VENTOR Jbh/n/ fi Beoke 14 BY- w ig g.

ATTORNEY? Patented May 25, 1937 Y r STAT Ed WARP TWISTINGFIN, MACHINE John H. Becker, Ridgewood, N. I, assignor to I Warp Twisting-In Machine Company, New

York, N. 1., a corporation of New York Application July 23, iesaseriai No. 92,132,"

10 Claims. (01. 28-48 In Patent No. 1,f1-.0P ,067 and those therein mentioned there is disclosed a machine known as a warp twisting-inmachine foruniting thefthreads of the old warp; wound on the take-up beam and extending through the harness of a loom, with those of a new'warp, woundon a beam to replace in the loom the let-01f beam for theold warp. In the twisting of each new warp thread a with the complementary old Warp thread the ends of the two threads are twisted together to form a twisted f tail and then this twisted tail is twisted around the new warp thread, thus producing a composite twist or union which will pass through the corresponding heddle of the harness. The machine comprises the following mechanism, generally stated: Means, as a clamp, 'toinitially hold the freeends of both warps as they extend in opposite directions. from their beams; means to segregate from the respective;

warps the threads to be twisted together, such means maintaining leases in the warps; means to advance such threads from the warps to the position for undergoing twisting; and means for effecting the twisting comprising members, one rotary relatively to the other, which clamp the threads and hold them, in coaction with the beams and during the twisting, in the initial state of tension efiected by the coaction of the mentionedclamp with the beams, it being understood that after such clamping is effected by said members the threads are severed between them and the clamp.

Threadswhich have considerable resistance to twisting and are quite wiry, for instance, hardsized threads of synthetic yarn, do not readily respond to the twisting action as the machine was heretofore constructed; sometimes a union of the threads did not occur at all, and frequently the union formed is so Weak and the twist is so lacking in compactness that when the resulting composite strand is drawn through its heddle-of the harness it parts at the twist or such twist becomes caught on the heddle. According to this invention, as considerable practice has shown, this fault has been completely overcome.

Again, when the threads are advanced to the position for the twisting they have been held heretofore in a fixed holding fork or thread holder, wherefore at the outset of the twisting provement-is not indispensablagbut it reduces the ohance of failure to start the rolling with twisting- I In the drawings, k V 1 Figsrl and 2 are, -respectively,a front and a left side elevation of the improved machine, Fig. 2 showing diagrammatically the harness, take-up; beam and new warp beam; 1

Figs. 3 and 4 are, respectively, a front elevation and a plan, both on a largerscale, of that part of the machine directly involving-the invention;

Figs. 5 and 6 are right and left side elevations, respectively, of what is shown in Figs. 3 and 4;

Figs. '7 and 8 are sections on lines 1+1 and 8-8, respectively, of Fig. 6; r,

Figs; 9 to 16 show thetwisting pads as seen in Figs. '7 and 8 and the associated parts in the positions they occupy successively from the' inception to the completion of the twisting and delivery of the threads as a composite or single strand; and

Fig. 17 is a plan of a modification, showing the holding fork or thread-holder movable.

In the frame I vertically reciprocates a structure 2 having the mentioned clamp 3 for the old warp b and new warp a and also,'at its lower portion, the forwardly projecting rods or presser feet 4 to bear on the warps (when said structure descends) between the rods 5 of the frame over which the warps extend. b and a are the harness and beam. The clamp initially coacts with the take-up beam 122 in the loom and with beam a to hold the two warps in tension. Leases are maintained in the two warps and two threads at atime (one from each) are segregated from the warps by the hook-bar pairs 6 which are rotated half-revolutions at a time and on each such movement retract. The segregated threads are advanced by the rotary spiral l lengthwise of a fork 8 which slides forward and back in the frame, these threads finally coming into engagement with its slender upturned hook-like ends 8;; (i. e., in position for the twisting of such threads together), entering a stationary holding fork or thread-holder 9. A fixed shaft l0 carries the support Ila for the stationary twisting pad II and a rotary shaft l2 carries the support l3a for the rotary twisting pad 13; the pads may be associated with their supports as shown in my Patent No. 1,706,390, so as to be elastically urged toward each other when they 'are in action, or effecting twisting; the pads form members to clamp the threads, as will appear. Means, not shown butclear from the patentsfirst mentioned herein, drives the structure 2, the hook-bars, the

fork, the spiral and the shaft I! for the rotary pad l3 so that said structure and fork 8 each reciprocate and the spiral and shaft l2 perform a full revolution and the hook-bars a half-revolution all in properly timed relation to each other and as explained in the mentioned patents. The warp 12 extends from one rod or presser foot 4 and under the shaft l2 and then to fork 8, and warp a extends from the adjoining rod or presser foot 4 directly to said fork as shown in Fig. 2. When the two threads (1* and b* engaged with the ends 8a of fork 8 have been brought forward to position (having cleared rods 4) for twisting together by the pads (Figs. 5, 6 and 9 toll) and the pad l3 has rotated sufficiently to clamp both threads the upstanding portions of the threads are severed (Fig. 11) by the device M which is fulcrumed on the support Ila for the stationary lower end of rib y and a table x3 below the recess,

it follows a known construction, the operation of which as the padsare thus constructed (cf. Landfears Patent No. 1,424,276 and my Patent No. 911,885, and see the Goss Patent No. 648,738) it is pertinent to describe in order to have a proper understanding of my present invention: Thus, the two threads being held by the ends 8a of fork 8 (initially) and in the thread-holder Sin the plane of the acting faces of the pads (Fig. 9),

they are clamped by the pads and so started rolling (Fig. 10) and are then severed (Fig. '11), such rolling being effected as to the outer ends of the illustrated bent-off terminals of their clamped free end portions by pad I3 and rib y and result ing in the forming of a tail c (Fig. 12) while said terminals are clamped, with less rolling speed, by pad l3 and rib z (fork-ends 8a having by this time retracted clear of the threads). As the tail rolls around, it and thread a* come into the notch m2 whereby the rolling, theretofore effected between pad [3 and rib y, ceases while the rolling of the inner end of the tail with thread (1* continues to be effected by pad l3 and rib a, this developing a composite twist of the twisted tail with thread a.*, such composite twist finally rolling out of notch x2 so that it is next rolled bodily between pad l3 and table x3 and the united threads delivered as a composite strand. It is essential to this operation that the terminal" of at least the thread a* be initially bent off, as in Fig. 9.

The twisting mechanism as it thus is formed and operates has proven in extensive use through many years altogether satisfactory where the threads manipulated did not have the superior resistance to twisting and wiry nature of hardsized yarns. But when it is attempted to forma stable and properly compact composite twist in threads having such superior resistance and wiry nature it is found that the reverse or outward twisting as between the twisted tail and thread at (which is supposed to ensue due to such tail and thread being in notch :12 while pad 13 and rib .2 continue their rolling action at the inner end of the tail) fails to do so, or at least occurs so incompletelythat the union is weak or is not compactly formed, or both, so that an imperfect composite strand results, and in any event the mechanism does not reliably perform its intended operation on threads of such character.

I have found that if thread a* is held against advance until and after tail 0, having been twisted and so formed, coincides with it, this fault may be overcome and that threads having the superior resistance and wiry nature indicated can with reliability and with suflicient tightness be twisted together to form a strong and properly compact composite twist. This I accomplish in this example by a detent I8 to be described. Preferably to discourage any tendency of thread (1* to be rolled notwithstanding, and incidentally to be strained because of, the detent until tail c 7 coincides with it I form in rib 1 above notch m2 another notch :10.

When the tail 0 has been rolled into this notch :13 the rolling of the inner end of the tail around thread (1* begins, thus to develop (in the outward direction) the composite twist c (Fig. 13); thereafter the detent device I8 may begin to fall or retract more or less at the same rate as the progress, incident to rolling, of the inner end of the tail around thread a* proceeds. Finally, if notch :02 is retained, as shown, the composite twist becomes so far developed in this way that it rolls out of the notch :c' (Fig. 14) and comes to a pause again in notch .102, being then subjected to a further twisting effort as its inner end is rolled between pad l3 and table r3 while its outer end occupies this notch, detent I 8 meanwhile still retracting (see Fig. 15). Fig. 16 shows the composite strand (1 delivered, for which purpose the detent has retracted clear of thread a (see the detent as shown dotted in Fig. 5).

The detent I8 is fulcrumed in a bracket l1 attached to support Ha at the new-yarn side thereof, being a lever which moves in a nearly vertical fore-and-aft plane from the full line position of Fig. 5, where it is shown extending through the plane of the coacting faces of the pads, to thedotted position. Connected with it tion. The detent having served to support said thread until the twisting shown in Fig. 13 is at least Well under way, the cam then permits it gradually to retract in response to spring 20, until finally the detent clears the plane of twisting altogether (Fig. 5, dotted) to permit delivery of the composite strand d.

When the thread-holder is fixed, as previously assumed, the threads are not only subject to strain augmenting that of the tension imposed on them at the outset when they are secured in the clamp 3 (such strain being incident to the initial effort to roll them around each other and so twist them togethersee Fig. 10), but sometimes the effort to start the twist is abortive or at least unduly postponed. Hence, according to the construction of Fig. 17 I mount the threadholder, 2 i, on the support I I a so as to be movable in the general direction in which the threads shift in response to action of the rotary pad. It is here made to obtain such movement through transmission means afforded by the cutter device [4 and a link 22 connecting them. When the threads begin to be clamped by the pads, and

hence their rolling action starts, and until said device severs them, the thread-holder moves compensatingly, or generallyin the same direction as the threads shift, wherefore the thread-holder does not interfere with the tendency of the threads to roll and they are not unduly strained.

Having thus fully described my invention what I claim is:

1. The combination, with means from which respectively extend threads one of which is to be united with the other and twisting mechanism including, with supporting means, members between which the free end portions of the threads v are clamped with the terminals of such portions extending generally in the same direction and close together and the terminal of said portion of the first named thread bent 01f, one member being movable relatively and in thread-clamping relation to the other first to twist said terminals together to form thereof a twisted tail and then to twist such tail around the remaining portion of said first-named thread which lies between said members to form a composite twist, of means on the supporting means to oppose displacement, during the twisting, of the part of the first-named thread which is between the means from which such thread extends and said members.

2. The combination, with means from which respectively extend threads one of which is to be united with the other and twisting mechanism including, with supporting means, members between which the free end portions of the threads are clamped with the terminals of such portions extending generally in the same direction and close together and the terminal of said portion of the first-named thread bent off, one member being movable relatively and in thread-clamping relation to the other first to twist said terminals together to form thereof a twisted tail and then to twist such tail around the remaining portion of said first-named thread which lies between said members to form a composite twist, of a de tent movable on the supporting means to a position to oppose displacement of the part of the first-named thread which is between the means from which such thread extends and said members, and means to move said movable member and, during the twisting, move said detent to said position.

3. The combination, with means from which respectively extend threads one of which is to be united with the other and twisting mechanism including, with supporting means, members between which the free end portions of the threads named thread which is between the means. from which such thread extends and said members, and means to move said movable member and during the twisting, move said detent to and then from said position.

4. The combination, with means from which respectively extend threads one of which is to be united with the other and twisting mechanism including, with supporting means, members between which the free end portions of the threads are clamped with the terminals of such portions extending generally in the same direction and close together and the terminal of said portion of the first-named thread bent off, one member being movable relatively and in thread-clamping reiation to the other first to twist said terminals together to form thereof, a twisted tail and then to twist such tail around the remaining portion of said first-named thread which lies between said members to form a composite twist, of a detent movable on the supporting means to a position to oppose displacement of the part of the first-named thread which is between the means from which such thread extends and said members, and means to move said movable member and during the twisting, move said detent to, and during the second-named part of the twisting, move said detent from, said position.

5. The combination, with means from which respectively extend threads one of which is to be united with the other and twisting mechanism including, with supporting means, members between which the free end portions of the threads are clamped with the terminals of such portions extending generally in the same direction and close together and the terminal of said portion of the first-named thread bent ofi, one member being movable relatively and in thread-clamping relation to the other first to twist said terminals together to form thereof a twismd tail and then to twist such tail around the remaining portion or" said first-named thread which lies between said members to form a composite twist and the other member having, in its clamping face and adjacent the means from which the first-named thread extends, a notch to receive such thread, of means on the supporting means to oppose displacement, during the twisting, of the part of the first-named thread which is between the means from which such thread extends and said members.

6. The combination, with means to hold a pair of threads taut, of means to hold taut portions of the threads close together including a movable thread-holder, members between which said portions are clamped one of which is movable relatively and in thread-clamping relation to the other in the direction to coact therewith to twist said portions together, said thread-holder being movable in the general direction in which the threads shift when said portions are twisted to gether, and supporting means for said members and thread-holder.

'7. The combination, with means to hold a pair of threads taut, of means to hold taut portions of the threads close together including a movable thread-holder, members between which said portions are clamped one of which is movable relatively and in thread-clamping relation to the other in the direction to coact therewith to twist said portions together, said thread-holder being movable in the general direction in which the threads shift when said portions are twisted together, means to transmit motion from said movable member to said thread-holder, and supporting means for said members, thread-holder and third-named means.

8. The combination, with means to hold a pair of threads taut, of means to hold' taut portions of the threads close together including a movable thread-holder, members between which said portions are clamped one of which is movable relatively andin thread-clamping relation to the other in the direction to coact therewith to twist said portions together, said thread-holder being movable in the general direction in which the threads shift when said portions are twisted together, means to transmit motion from said movable member to said thread-holder including a device to sever the threads, and supporting means for said members, thread-holder and third-named means.

9. The combination, with means to hold a pair of threads taut, of a member against which the taut portions of the threads are adapted to bear, a movable system including a member movable relatively and in thread-clamping relation to the first member and coactive therewith to twist together the clamped portions of the threads and a thread-holder holding said clamped portions close together, said second-named member and thread-holder being connected to move simultaneously and in generally the same direction, and supporting means for said system.

10. The combination, with means to hold a pair of threads taut, of a member against which the 5 JOHN H. BECKER. 

